Air Miles Calculator

Distance between Casper, WY (CPR) and Portsmouth, NH (PSM)

Flight distance from Casper to Portsmouth (Casper–Natrona County International Airport – Portsmouth International Airport at Pease) is 1792 miles / 2884 kilometers / 1557 nautical miles. Estimated flight time is 3 hours 53 minutes.

Driving distance from Casper (CPR) to Portsmouth (PSM) is 2175 miles / 3500 kilometers and travel time by car is about 37 hours 9 minutes.

Map of flight path and driving directions from Casper to Portsmouth.

Shortest flight path between Casper–Natrona County International Airport (CPR) and Portsmouth International Airport at Pease (PSM).

How far is Portsmouth from Casper?

There are several ways to calculate distances between Casper and Portsmouth. Here are two common methods:

Vincenty's formula (applied above)
  • 1792.264 miles
  • 2884.369 kilometers
  • 1557.435 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
  • 1787.473 miles
  • 2876.659 kilometers
  • 1553.272 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).

Airport information


A Casper–Natrona County International Airport
City: Casper, WY
Country: United States Flag of United States
IATA Code: CPR
ICAO Code: KCPR
Coordinates: 42°54′28″N, 106°27′50″W

B Portsmouth International Airport at Pease
City: Portsmouth, NH
Country: United States Flag of United States
IATA Code: PSM
ICAO Code: KPSM
Coordinates: 43°4′40″N, 70°49′23″W

Time difference and current local times

The time difference between Casper and Portsmouth is 2 hours. Portsmouth is 2 hours ahead of Casper.

Time Difference

Casper, WY

 MST

Portsmouth, NH

 EST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 199 kg (440 pounds).

Frequent Flyer Miles Calculator

Casper (CPR) → Portsmouth (PSM).

Distance:
1792
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1792

Round trip?